Machine shuttle



(No Model.)

J. H. OSBORN.

SEWING MAUHINE SHUTTLE. No. 321,381. Patented June 30, 1885.

N. PETERS. PMloLRi-xapp'lur, Wahinflon, D. C.

UNITED STATES ATENT Orrrcn.

JOHN H.

ING MACHINE COMPANY, OF SAME PLACE.

SEWING-MACHINE SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 321,381, dated June 30,1885.

Application filed August 13 1884. '(No model.)

T 0 all whom it may concern:

Be it known that I, JOHN H. OSBORN, a citizen of the Dominion of Canada,residing at Cleveland, in the county of Cnyahoga and State of Ohio, haveinvented certain new and useful Improvements in Sewing -MaohineShuttles, of which the following is a specification, reference being hadtherein to the are companing drawings.

My invention relates more particularly to that class of sewing-machineshuttles in which the bobbin is inserted into and removed from the heelof the shuttle, which is closed by a sliding and swinging cap -piecewhen the bobbin is in place, the object of my invention being to providea shuttle of this kind which is simple in construction and convenientfor use.

I have illustrated my invention in the accompanying drawings, in whichFigure 1 is a plan View of my shuttle with the cap-piece in position toclose the heel thereof. Fig. 2 is a similar view, with the cap-pieceswung aside and the thread-guard partly broken away. Fig. 8is a sideelevation; Fig. 4., a longitudinal section on line i at, Fig. l; andFig. 5 a rear end view with the cap-piece swung aside.

A indicates an openended cylindrical shuttle-shell, to which isattached. by a securing and regulating screw, A, a tension'spring, B,having a thread-guard, 1), formed integral therewith. The shell A isprovided with an openended threadingslot, a, a small notch a, for thedownwardly-turned end of the thread-guard to hold the latter in place,and a larger notch, a in which fits the neck a of the sliding andswinging cap-piece O. A pin, d, passing through the rear end of thetensionspring and through a slotted opening in the stock 0 of thecappiece, and screwed or riveted to the shuttle-shell, serves to connectsaid stock loosely to said shell. The rear end, (1', of thetension-spring is pointed and turned downward slightly to fit in areccss or indentation, o in the stock of the cap-piece when the latteris in position to close the heel of the shuttle, the tensionspring thusserving to hold the cap-piece in place. The stock of the cap-piece isprovided at its rear end with a raised projection, 0 which in thepresent instance is formed as a bridge extending thread-guard, said overthe rear end of the bridge being of sufficient length to enable thestock to slide far enough 5 5 backward to let the cap-piece swing asideclear of the heel of the shuttle. The front of this projection or bridgeaffords a convenient bearing for the finger or thumb nail of theoperator to press against in sliding the cap-piece rearward to enable itto be swung aside when the bobbin is to be inserted or removed.

To thread the shuttle the bobbin-thread is drawn into the threading-slot(t beneath the tension-spring and around the thread-finger b thereof,whence itwill pass rearward. The cap-piece O, which inthe meantime hasbeen swung aside, as in Fig. 2. to admit of the insertion of the bobbin,will then be brought around and pressed forward until its neck entersthe notch (0 when the downwardlyturned point d at the rear end of thetension-spring will enter the recess 0" in the stock of the cap-pieceand hold the latter in place.

Having thus described my invention, I claim and desire to secure byLetters Patent-- 1. The combination, with an open-ended shuttle-shell,of a sliding and swinging cappiece for closing the same, said cap-piecehaving a stock provided with a raised projection, against which theoperator may press in sliding the same rearward, substantially as setforth.

2. The combination, with an open-ended shuttleshell, of a sliding andswinging cappiece having a stock provided with a recess, and atension-spring having a downwardlyturned point at its rear end adaptedto engage said recess to hold the cappiece in place, substantially asset forth.

3. The combination, with an open-ended shuttle-shell, and atension-sprin g fined thereto and having a thread-guard, of a slidingand swinging cap-piece having a stock provided with a bridge extendingover the rear end of said thread-guard,said bridge being raised abovethe main portion of said stock to form a projection against which theoperator may press in sliding said cap-piece and stock rearward,substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

J OHN H. OSBORN. Witnesses:

F. W. LOTHMAN, L. H. Snvnnnnon.

